MadSci Network: General Biology
Query:

Re: How can I weigh my hand only?

Date: Wed Feb 16 15:23:56 2000
Posted By: florrie surrette, Secondary School Teacher, science, north shore technical high schoolh
Area of science: General Biology
ID: 950255992.Gb
Message:

Well, Enoch---I thought I had heard it all by now but this is the first 
time that  anyone has ever asked me anything like this. I'd be curious to 
know why this subject interested you.

I did a web search and found nothing. I also went through every medical 
anatomy textbook and dictionary in our local medical center library and 
found nothing.

I then  remembered that a science teacher  friend of mine had a "real bone" 
skeleton which he had bought about  30 years ago. It is the size of a 5' 5" 
male.  I paid him a visit and after about 2 hours the two of us came up 
with an answer for you.


 1) We first seperated the hand from the skeleton and weighed it == 33.88 
    grams
 2) the wire that held it together was immovable so we calculated 
    the weight by using comparable wire; that equaled == 9.8 grams
 3) we deducted 9.8 from 33.88 and came up with a total of  == 24.08 grams
    for actual weight of the bone
 4) We then called a friend who sculpts and a doctor friend -- trying to 
    come up with a consensus on the weight (tissue + blood) to bone ratio. 
    They both told us that it was somewhere between 30-40%
 5) so the weight of a 5' 5" male's hand is between 31.28 grams and 33.08 
    grams

The only other thing that you might consider is weight displacement in 
water, but I don't have a clue on how to make that an accurate measurement 
without seperating the hand from the body.

So, why did you want to know this anyway? 





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